Attraction: Bats Underneath Congress Bridge

On hot, humid summer nights, just before the pink and orange Texas sky dims, a cloud of little black dots begins to thicken beneath Congress Bridge. It's the beginning of a nightly ritual for more than one million Mexican free-tailed bats fluttering out for their evening meal. The web-winged creatures have become quite the spectacle for the hundreds who line the bridge each night, awaiting the dinnertime exodus. No mosquito is spared as the creatures take flight—the bats consume up to 30,000 pounds of insects every night.